Sapphire Instruments
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Sapphire Instruments
Overview
The differential amplification principle of a high-voltage differential probe refers to a pair of signals being input into an amplification circuit simultaneously and then subtracted to obtain the original signal.
A differential amplifier is an amplifier composed of two transistors with identical parameter characteristics and configured using direct coupling.
If signals of the same magnitude and the same phase are input to the two input terminals, the output is zero, thereby overcoming zero drift.
Typical applications of high-voltage differential probes:
Measurement of dynamic parameters of SiC and GaN semiconductors
Evaluation of power supply system switching parameters
Measurement of floating ground voltages in high-voltage inverters
Electric & hybrid vehicle electric drive systems
High-energy physics research
——— Related Applications ———
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IWATSU multi-channel high-voltage high-frequency optically isolated measurement probe Isolation SE-6000 remote UHV safety test system
CIC high-voltage differential probe DP20-20K-LVC high-precision 0.1% high-frequency isolated high CMRR 20 kV
Specifications
SI-9010A Specifications
| Parameter | Specification |
|---|---|
| Bandwidth | DC to 70MHz (-3dB) |
| Attenuation | 1:100 / 1000 |
| Accuracy | ±2% |
| Input Impedance | 50MΩ // 10pF each side to ground |
| Input Voltage | |
| - Category | CAT I |
| - Differential Range* | 700Vrms and ±700V (DC+Peak AC) @1/1005000Vrms and ±7000V (DC+Peak AC) @1/1000 |
| - Common Mode Range* | 5000Vrms and ±7000V (DC+Peak AC) @1/100 & 1/1000 |
| - Absolute Max. Voltage* | 5000Vrms and ±7000V (DC+Peak AC) @1/100 & 1/1000 (Differential or Common Mode) |
| Output Voltage | |
| - Swing (into 50kΩ load) | ±7V |
| - Offset (typical) | |
| - Noise (typical) | 0.9mVrms |
| - Source Impedance (typical) | 50Ω (for using 1MΩ input system oscilloscope) |
| CMRR (typical) | -80dB @ 50Hz, -60dB @ 20kHz |
| Ambient Operating Temperature | -10 to 40℃ |
| Ambient Storage Temperature | -30 to 70℃ |
| Ambient Operating Humidity | Up to 85% RH |
| Ambient Storage Humidity | Up to 85% RH |
| Power Requirements | |
| - Standard | 4xAA cells or 6VDC/200mA mains adaptor** or regulated 9VDC/120mA mains adaptor** |
| - Options | Power leads |
| Length of BNC Cable | 90cm |
| Length of Input Leads | 60cm |
| Weight | 500g |
| Dimension (L×W×H) | 202mm × 83mm × 38mm |
Notes:* Voltage limit is the lesser of the DC+Peak AC and RMS values.
** a. The supplied voltage must be less than 12V and greater than 4.4V, otherwise the probe could be damaged or can’t operated properly.b. Polarity is “+” inside and “-” outside. For wrong polarity, built-in circuit protects the probe, no danger or damage will occur.c. When the voltage of the cells become too low, the power indicator on the panel will flicker.
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* Specifications are subject to change without notice.